I'm suffering from tearing too, but I don't see a v-sync line in my gpl core.ini.
Please could someone tell me if/where I can add it in, and what to type?

This requires a bit of testing, but at least with the new rasterisers there is an option to enable vsync in GEM+. Click the "Rasterizer" button when you have either of the new rasterisers selected and select the "enable vsync" checkbox. Other than that, your video card driver should have an option to force vsync on. Nvidia control panel has that option which can be configured per each application.

I'm suffering from tearing too, but I don't see a v-sync line in my gpl core.ini.
Please could someone tell me if/where I can add it in, and what to type?

This requires a bit of testing, but at least with the new rasterisers there is an option to enable vsync in GEM+. Click the "Rasterizer" button when you have either of the new rasterisers selected and select the "enable vsync" checkbox. Other than that, your video card driver should have an option to force vsync on. Nvidia control panel has that option which can be configured per each application.

Okay, thanks brr
I'm pretty sure I am still using the rasterisers that came with the 2004 demo, so that will be why there is not any option to activate it. I will try forcing it with ATI tray tools, and if that doesn't work then give some new rasterisers a go.
Thanks again

Edit: just tried it and the FFB is so much better!
The car tells you exactly what it is doing and your inputs are used more quickly (lockups look even cooler now, and can be corrected more easily on-the-fly). Great!